Is It Autonomic Nervous System Disorder or Thyroid Dysfunction?

Is it autonomic nervous system dysfunction or thyroid dysfunction?

I have a family history of hyperthyroidism.
Over the past year, I've been under a lot of stress, and about one or two months ago, I started experiencing occasional shortness of breath and rapid heartbeat, feeling as if I'm about to die.
My daily routine is irregular, and I usually only eat one meal a day for breakfast or lunch.
I suspect I might have autonomic nervous system dysregulation or panic disorder.
However, I also have symptoms where I suddenly feel very hungry, and when I do, my heart starts racing, my hands tremble, and I feel like I'm about to faint, which is somewhat similar to hyperthyroidism.
Sometimes, my heart races and I become short of breath after eating.
Additionally, I am overweight.
What could this be more indicative of, and which specialist should I see?

111, 20~29 year old female. Ask Date: 2016/09/17

Dr. Liao Yaopan reply Family Medicine

Hello, based on your description, it is recommended to first consult your family physician for a comprehensive evaluation, and then determine whether a referral to other subspecialties is necessary.
It is important to maintain a normal daily routine to support your long-term health.
Changhua Hospital cares about you.

Reply Date: 2016/09/17

More Info

Based on your symptoms and medical history, it seems that you may be experiencing a combination of issues related to both autonomic nervous system (ANS) dysfunction and potential thyroid dysfunction. Given your family history of hyperthyroidism, it is essential to consider the possibility of thyroid-related problems, especially since your symptoms include rapid heartbeat, shortness of breath, and episodes of feeling faint or shaky when hungry.

The autonomic nervous system is responsible for regulating involuntary bodily functions, including heart rate, blood pressure, respiration, and digestion. When the ANS is not functioning properly, it can lead to a variety of symptoms, including anxiety, palpitations, and gastrointestinal disturbances. Your description of feeling very hungry, followed by an increased heart rate and shakiness, could indicate a dysregulation of the ANS, possibly exacerbated by stress and irregular eating patterns.

On the other hand, hyperthyroidism can also cause symptoms such as increased heart rate, anxiety, weight loss, and tremors. The fact that you have a family history of thyroid issues makes it crucial to evaluate your thyroid function through blood tests that measure levels of Thyroid Stimulating Hormone (TSH), Free T4, and Free T3. These tests will help determine if your thyroid is overactive, which could explain some of your symptoms.

Given your situation, I recommend that you consult with an endocrinologist, who specializes in hormonal disorders, including thyroid dysfunction. They can perform the necessary tests to assess your thyroid function and determine if hyperthyroidism is contributing to your symptoms. Additionally, it may be beneficial to see a neurologist or a psychiatrist who specializes in anxiety disorders and autonomic dysfunction. They can help evaluate your symptoms related to the autonomic nervous system and provide appropriate treatment options.

In the meantime, consider making some lifestyle changes that may help alleviate your symptoms. Regular meals can stabilize your blood sugar levels and prevent episodes of shakiness and anxiety. Aim to eat smaller, more frequent meals throughout the day, including a balance of carbohydrates, proteins, and healthy fats. Staying hydrated is also essential, as dehydration can exacerbate autonomic dysfunction.

Managing stress through relaxation techniques such as mindfulness, yoga, or deep breathing exercises can also be beneficial. Regular physical activity, tailored to your ability, can improve overall well-being and help regulate the autonomic nervous system.

In summary, your symptoms may stem from a combination of autonomic nervous system dysfunction and potential thyroid issues. It is crucial to seek medical evaluation from both an endocrinologist and a specialist in autonomic disorders to get a comprehensive understanding of your condition and appropriate treatment.

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